520d Luxury or M Sport

[Scubdup]

I'm looking at getting a 520d Touring, and can't find out much about the differences in spec between the Luxury and M Sport models.

I've read on here that the M Sport comes with different suspension, but I can't see that confirmed on the BMW website which seems to suggest the differences are mainly cosmetic.

I'll be going from a mk5 Golf TDI so I'm optimistic that whichever I go for, I'll appreciate significant improvements in comfort and handling.